Fix Firefox bookmarks import.

chrome/test/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3663 matching lines @@
       "../browser/ui/window_sizer/window_sizer_unittest.cc",
       "../browser/ui/zoom/zoom_controller_unittest.cc",
       "../browser/usb/usb_chooser_context_unittest.cc",
       "../browser/usb/usb_chooser_controller_unittest.cc",
       "../browser/usb/web_usb_detector_unittest.cc",
 
       # The importer code is not used on Android.
       "../common/importer/firefox_importer_utils_unittest.cc",
 
       # No service process (which also requires multiprocess lock).
+      "../common/importer/mock_importer_bridge.cc",
+      "../common/importer/mock_importer_bridge.h",
       "../common/multi_process_lock_unittest.cc",
       "../test/base/browser_with_test_window_test.cc",
       "../test/base/browser_with_test_window_test.h",
       "../utility/importer/bookmark_html_reader_unittest.cc",
       "../utility/importer/bookmarks_file_importer_unittest.cc",
       "../utility/importer/edge_database_reader_unittest_win.cc",
       "../utility/importer/firefox_importer_unittest.cc",
       "../utility/importer/firefox_importer_unittest_messages_internal.h",
       "../utility/importer/firefox_importer_unittest_utils.h",
       "../utility/importer/firefox_importer_unittest_utils_mac.cc",
@@ skipping 1439 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }